f(x)=5x, g(x)=3x-7 gf(x)= = g(f(x)) = g(5x) = 3*(5x) - 7 = 15x-7 So gf(4) = 15*4-7=53
When y=4, x=8/5
5x - 10 = 20Add 10 to each side:5x = 30Divide each side by 5:x = 6If you feel that you must graph this equation for some reason,then your graph is a vertical line, parallel to the y-axis, passingthrough the point [ x=6 ] on the x-axis.
g(x) = x-6 is the function g(x) = x with a negative vertical shift of 6. That is to say, take the whole graph of g(x) = x and move it down 6 units.
Using the quadratic equation formula: x = -1/4 and x = 2/3
5x=11y
The graphs of y = 5x - 2 and y = x - 2 will have different slopes but with the same y intercepts.
-43
5x -6y=-30 5x-6y=30 (2x+3y) (2x-3y)=30 4x+6y=30 4x=30 x=30/4
4x-7=5x-2 x=-5
To graph them, you need to put them into the formula y=mx+b. If x+y=8 subtract x to get y=-x+8. 8 is the y-intercept and your line should be heading downward from left to right.
(f+g)=4x+5x-2