How do you solve #y = x - 7#, #y = -2x + 5# by graphing and classify the system?
1 Answer
Jul 17, 2016
#(4, -3)# is the solution
Explanation:
Given -
#y=x-7# -----------(1)
Find the two intercepts
y- intercept
At
#(0, -7)# is a point on the curve
x-intercept
At
#(7, 0)# is another point on the curve.
Plot them and join them with the help of a straight line
#y=-2x+5# ----------(2)
Find the two intercepts
y-intercept
At
#(0, 5)# is a point on the curve
At
#(2.5, 0)# is another point on the curve
Plot these two points on the graph.
Join them with the help of a straight line.
Fix the point where they cut each other.
They cut at