Which expression is equivalent to 12x-3x
a. x(12-3)
b. 8x
c. 3 (3x-x)
d. 9
{special instructions}
leave an explanation to how you found your answer.

b. 8x

Step-by-step explanation:

its easy because the unknowns are equal then you just do the subtraction

A

Because 12-3=9. Then, you’re going to multiply the x to the 9 making it 9x. Which is the same as 12x-3x since that’s also 9x

x=-2

infinite number of lines, so there is an infinite number of equations.

step-by-step explanation:

there are an infinite number of line that passes through the point (-2,5)

x=-2   is one line that passes through the point

y = 5 is another line that passes through the point

(these two lines are perpendicular to each other).

since the number of   numbers are infinite and the slope is the ratio of two numbers,(change in y over change in x) we can have an infinite number of slopes.     our only condition is that it passes through the point (-2,5)