4. Here is a linear equation: y=1/4 x + 5/4
a. Are (1, 1.5) and (12,4) solutions to the equation? Explain or show your reasoning.
b. Find the x-intercept of the egraph of the equation. Explain or show your reasoning.

Respuesta :

Step-by-step explanation:

"Solutions to the equation" just means that they are points on the line. To find out if these two points land on this line, plug each one in, like this:

1.5 = (1/4)(1) + (5/4)

1.5 = (1/4) + (5/4)

1.5 = (6/4)

1.5 = 1.5

Since the expression is true, this point is on the line.

Do the same process for the second point (remember a point is formatted (x,y)) and see if it is also a point on the line.

To find the x-intercept, simply plug in 0 for y and see what you get. It should look like (x,0).