Graph y=5/4x^3

$y = \frac{5}{4} x^{3}$

Step 1

Find the point at $x = - 2$ .

Replace the variable $x$ with $- 2$ in the expression.

$f (- 2) = \frac{5 {(- 2)}^{3}}{4}$

Simplify the result.

Raise $- 2$ to the power of $3$ .

$f (- 2) = \frac{5 \cdot - 8}{4}$

Multiply $5$ by $- 8$ .

$f (- 2) = \frac{- 40}{4}$

Divide $- 40$ by $4$ .

$f (- 2) = - 10$

The final answer is $- 10$ .

$- 10$

Convert $- 10$ to decimal.

$y = - 10$

Step 2

Find the point at $x = 0$ .

Replace the variable $x$ with $0$ in the expression.

$f (0) = \frac{5 {(0)}^{3}}{4}$

Simplify the result.

Raising $0$ to any positive power yields $0$ .

$f (0) = \frac{5 \cdot 0}{4}$

Multiply $5$ by $0$ .

$f (0) = \frac{0}{4}$

Divide $0$ by $4$ .

$f (0) = 0$

The final answer is $0$ .

$0$

Convert $0$ to decimal.

$y = 0$

Step 3

Find the point at $x = 2$ .

Replace the variable $x$ with $2$ in the expression.

$f (2) = \frac{5 {(2)}^{3}}{4}$

Simplify the result.

Raise $2$ to the power of $3$ .

$f (2) = \frac{5 \cdot 8}{4}$

Multiply $5$ by $8$ .

$f (2) = \frac{40}{4}$

Divide $40$ by $4$ .

$f (2) = 10$

The final answer is $10$ .

$10$

Convert $10$ to decimal.

$y = 10$

Step 4

Find the point at $x = - 1$ .

Replace the variable $x$ with $- 1$ in the expression.

$f (- 1) = \frac{5 {(- 1)}^{3}}{4}$

Simplify the result.

Raise $- 1$ to the power of $3$ .

$f (- 1) = \frac{5 \cdot - 1}{4}$

Multiply $5$ by $- 1$ .

$f (- 1) = \frac{- 5}{4}$

Move the negative in front of the fraction.

$f (- 1) = - \frac{5}{4}$

The final answer is $- \frac{5}{4}$ .

$- \frac{5}{4}$

Convert $- \frac{5}{4}$ to decimal.

$y = - 1.25$

Step 5

Find the point at $x = 1$ .

Replace the variable $x$ with $1$ in the expression.

$f (1) = \frac{5 {(1)}^{3}}{4}$

Simplify the result.

One to any power is one.

$f (1) = \frac{5 \cdot 1}{4}$

Multiply $5$ by $1$ .

$f (1) = \frac{5}{4}$

The final answer is $\frac{5}{4}$ .

$\frac{5}{4}$

Convert $\frac{5}{4}$ to decimal.

$y = 1.25$

Step 6

The cubic function can be graphed using the function behavior and the points.

$\begin{array}{c} x & y \\ - 2 & - 10 \\ - 1 & - 1.25 \\ 0 & 0 \\ 1 & 1.25 \\ 2 & 10 \end{array}$

Step 7

The cubic function can be graphed using the function behavior and the selected points.

Falls to the left and rises to the right

$\begin{array}{c} x & y \\ - 2 & - 10 \\ - 1 & - 1.25 \\ 0 & 0 \\ 1 & 1.25 \\ 2 & 10 \end{array}$

Step 8

Graph y=5/4x^3

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