Using a table and graph to find slope:
Take two sets of points, and use the formula
, where
y1= the y-coordinate of the first point
y2 = the y-coordinate of the second point
and
x1= the x-coordinate of the first points
x2= the x-coordinate of the second point.
If you want a walkthrough of how to use this formula, PM me and I'd be glad to help you as soon as I can :)
X = 1st number, y = 2nd number, z = 3rd number
x + y + z = 26
y = 2x
z = 2x + 6
x + (2x) + (2x + 6) = 26
5x + 6 = 26
5x = 26 - 6
5x = 20
x = 20/5
x = 4 <=== first number
y = 2x....y = 2(4) = 8 <=== second number
z = 2x + 6....z = 2(4) + 6 = 8 + 6 = 14 <=== third number
Consider, pls, this option (see the attachment) of 3 steps.
Answer:
6÷4=1,5
Step-by-step explanation:
per one dollar he bought 1,5 pounds of sugar