Solving Equations by Addition,Subtraction, Multiplication, & Division
Find the x-intercept: 4x + 5y = 20
x = 5 (5, 0)
5x = y
solve for x
What is x= y/5
Find the y-intercept: 4x + 5y = 20
y = 4 (0,4)
yx - a = cx
solve for x
What is x = a/y-c
6x(2 - 4) = -48
What is 4
Find the x-intercept: 2x + y = 2
x = 1 (1,0)
ay - b = c
solve for y
What is y= (b + c)/a
Find the y-intercept: 2x + y = 2
y = 2 (0,2)
3x - 4y = 7
solve for y
What is y= (3x - 7)/4
-245 = r/2 + 23
What is -111
Give a definition of x-intercept AND y-intercept.
The x-intercept is where the line crosses the x-axis. The y-intercept is where the line crosses the y-axis.
y = mx + b
solve for "m"
What is m = (y-b)/x