Here we will show you how to calculate and provide solutions to math problems related to 7x - y = 31.
We will start by calculating and showing you the solution for the x-intercept and y-intercept of 7x - y = 31.
Then, we will show you how to get the graph plot coordinates for 7x - y = 31 so we can illustrate it on a graph.
Finally, we will solve 7x - y = 31 for x and also for y, then calculate and show you the solution for the slope of 7x - y = 31.
Find x-intercept
The x-intercept is where the graph crosses the x-axis. To find the x-intercept, we set y1=0 and then solve for x.
7x - y = 31
7x - 1(0) = 31
x1 = 4.429 y1 = 0
Find y-intercept
The y-intercept is where the graph crosses the y-axis. To find the y-intercept, we set x2=0 and then solve for y.
7x - y = 31
7(0) - y = 31
y2 = -31 x2 = 0
Get Graph Plot Coordinates
Getting two graph points will allow you to make a straight line on a graph. The plot coordinate format is (x1,y1) and (x2,y2).
Thus, we use the x-intercept and y-intercept results above to get the graph plots for 7x - y = 31 as follows:
(x1,y1) and (x2,y2)
(4.429,0) and (0,-31)
Solve for x
To solve for x, we solve the equation so the variable x is by itself on the left side:
7x - y = 31
x = 0.143y + 4.429
Solve for y
To solve for y, we solve the equation so the variable y is by itself on the left side:
7x - y = 31
y = 7x - 31
Find slope
The slope of the line (m) is the steepness of the line. It is the change in the y coordinate divided by the corresponding change in the x coordinate. Simply plug in the coordinates from above and solve for m to get the slope for 7x - y = 31
m = (y2 - y1)/(x2 - x1)
m = (-31 - 0)/(0 - 4.429)
m = 6.999
Ax - By = C Calculator
Now you know how to solve 7x - y = 31. Enter another math problem here: