Algebra Examples

$y = 4 (3^{x})$

Step 1

Find the x-intercepts.

Tap for more steps...

Step 1.1

To find the x-intercept(s), substitute in $0$ for $y$ and solve for $x$ .

$0 = 4 (3^{x})$

Step 1.2

Solve the equation.

Tap for more steps...

Step 1.2.1

Rewrite the equation as $4 \cdot 3^{x} = 0$ .

$4 \cdot 3^{x} = 0$

Step 1.2.2

Take the natural logarithm of both sides of the equation to remove the variable from the exponent.

$\ln (4 \cdot 3^{x}) = \ln (0)$

Step 1.2.3

The equation cannot be solved because $\ln (0)$ is undefined.

Undefined

Step 1.2.4

There is no solution for $4 \cdot 3^{x} = 0$

No solution

Step 1.3

To find the x-intercept(s), substitute in $0$ for $y$ and solve for $x$ .

x-intercept(s): $None$

Step 2

Find the y-intercepts.

Tap for more steps...

Step 2.1

To find the y-intercept(s), substitute in $0$ for $x$ and solve for $y$ .

$y = 4 (3^{0})$

Step 2.2

Solve the equation.

Tap for more steps...

Step 2.2.1

Multiply $4$ by $3^{0}$ .

$y = 4 \cdot 3^{0}$

Step 2.2.2

Remove parentheses.

$y = 4 (3^{0})$

Step 2.2.3

Simplify $4 (3^{0})$ .

Tap for more steps...

Step 2.2.3.1

Anything raised to $0$ is $1$ .

$y = 4 \cdot 1$

Step 2.2.3.2

Multiply $4$ by $1$ .

$y = 4$

Step 2.3

y-intercept(s) in point form.

y-intercept(s): $(0, 4)$

Step 3

List the intersections.

x-intercept(s): $None$

y-intercept(s): $(0, 4)$

Step 4