10 0
-5
-10
X
-tof
-107
Solve the system of equations y = x + 7 and 2x + y = 10 using a graphical method.
A)
(0,5)
B)
(1,8)
o
(8,1)
D)
(17, 24)

a) 1/8

b) -10 m

c) y = x/8-10

Step-by-step explanation:

a) The slope of the line

We start by selecting two points on the graph

These are;

(0,-10) and (80,0)

The slope ;

m = y2-y1/x2-x1

m = (0+10)/(80-0) = 10/80 = 1/8

b) The y-intercept

This is where the graph crosses the y-axis

The point is (0,-10)

c) The equation

The equation is generally written as;

y = mx + c

where m is slope and c is y-intercept

Thus;

y = 1/8x -10