Sarah scored 10 points less than 3 times the number of points that Ross scored. Sarah scored 11 points. How many points did Ross score?

Sarah = 3×Ross -10

11=3Ross-10

3Ross=11+10

Ross=21/3

Ross=7

Ross scored7

options a,b,c are the right answer.

step-by-step explanation:

a linear parent function is always represented as y = x

if we write this function in the form of y=mx+c

⇒

or  

now if we plot a graph we will find these characteristics:

1) y intercept of the graph is zero so its a straight line passing through origin.

2) as we can see in both the forms of function written, values of x and y may be either positive or negative for the positive slope means points on the graph are either in first quadrant or in third one.

3) it's slope is one.

-2x + 7 = 7

subtract 7 from both sides.

-2x = 0

divide both sides by -2.

x = 0