Open Middle®
Directions: Using the digits 1 to 9, at most one time each, place a digit in each box to write an equation of a line in standard form with given x- and y-intercepts. Each number can only be used at most once.
Hint
What numbers can we rule out as coefficients for x and y in the equation?
Answer
There are many possible answers. One example is:
9x + 2y = 36
x-intercept: (4,0)
y-intercept: (0,18)
9x + 2y = 36
x-intercept: (4,0)
y-intercept: (0,18)
Source: Andy Schwen
8x + 4y = 64
y=-2x+16
x-intercept: ( 8,0) . value of x where y=0
y-intercept: (0,16 ) from y=mx+b format
This doesn’t work does it? It says each # can be only used once.
6x+2y=12
x-int – (6,0)
y-int – (0,2)