Question

Consider the equation 1.5x+4.5y=18. For each question, explain or show your reasoning.

Answer 1

Given:

The equation is

$1.5x+4.5y=18$

To find:

The y-intercept (in ordered pair).

Solution:

We have,

$1.5x+4.5y=18$

Putting x=0, we get

$1.5(0)+4.5y=18$

$0+4.5y=18$

$4.5y=18$

Divide both sides by 4.5.

$y=\dfrac{18}{4.5}$

$y=4$

So, y-intercept is 4.

Therefore, the graph intersect the y-axis at (0,4).