1. The graph of y=2/3x-2 is the top right corner, the -2 in the equation makes the line cross the y axis at -2
2. The slope is always with x and the y intercept is the second part of the equation.
The equation would be y = 5/6x -3
3. The slope is the change in Y over the change in X
slope = 10-7 / 2 - -1 = 3/3 = 1
Using the line formula y = mx+b, solve for b using the first point and the slope:
7 = 1 (-1)x +b
b = 7+1
b =8
The equation is -x +y =8
4. the jar starts with 6 , then they add 2 each day, multiply 2 by the number of days (x) and add it to 6:
The equation would be y = 2x + 6
5. point (5,9) slope = 2
Point-slope formula is written as y - y1 = m(x-x1)
y1 = 9, x1 = 5, m = 2
equation becomes y-9 =2(x-5)
