Answer:
See below.
Step-by-step explanation:
First, it's obviously a line so the equation is a linear equation.
In order to find a linear equation, we first need the slope and the y-intercept. Recall the slope-intercept form: , where m is the slope and b is the y-intercept.
We already know the point (0,3) which is the y-intercept. Thus, b=3.
To find the slope, use the slope formula:
Thus, the equation is:
Answer:
1) When x is 1, y is 4, and vice versa
2) When x is -6, y is 42, and when x is 7, y is 114
3) When x is -2, y is 2, and when x is 8, y is 42
Step-by-step explanation:
1)
which can be rearranged as
.
Substituting this lone y into the first equation, you get:
Move everything to one side:
Factor:
2)
which can be rearranged as
.
Let's use elimination this time and subtract the first equation from the second:
Factor:
3)
Let's set the two equations equal to each other through substitution:
Move everything to one side:
Factor:
Hope this helps!
