Question

What is the y-intercept of the equation 4x + 5y = 20?

Answer 1

Remark
The y intercept is found by isolating y. Once you have y on (say) the left hand side of the equation, the y intercept is found by finding b in

y=mx + b

It is just read.

Solve.
4x + 5y = 20    Subtract 4x from both sides.
5y = 20 - 4x     Divide by 5
y = 20/5 - (4/5) x
y = 4 - (4/5)x

The y intercept is 4.

Edit
The y intercept is (0,4) It is a point.
Give the brainliest to the other responder.

Answer 2

Hi there!

4x + 5y = 20

To find the y-intercept, substitute in " 0 " for " x " and solve for y.

4 × 0 + 5y = 20

0 + 5y = 20

5y = 20

y = $\dfrac {20}{5}$

y = 4

Hence, y-intercept = (0, 4)

~ Hope it helps!