Question

G(x)= 81-3x? what are the x and y intercepts?

Answer 1

Answer:

x - intercept : (27,0)

y- intercept : (0,81)

Step-by-step explanation:

$g(x)=81-3x$

you can rearrange the right side to make the equation look like y=mx+b

$g(x)=-3x+81$

According to y=mx+b, b is the y-intercept

∴ (0,81) is the y-intercept of the equation

To find the x-intercept, plug in 0 for y and solve for x

$g(0)=-3x+81\\-81 = -3x\\x = 27$

∴ (27,0) is the x-intercept of the equation