Help with ordered pair solns, intercepts, slopes, etc.

[Ladyslaw]

1. Determine whether each ordered pair is a solution of the given equation;
2x - 5y = 0 (-2,0), (-10,6), (5,0)

2. Find the x- intercept and the y- intercept of the graph of the equation:
8x - 11y = 0

3. Find the slope of each line, or state that the slope is undefined:
(-7,6) and (0,4); (-9,-3) and (1,5)

4. Solve the linear equation for y-. This will put the equation in the slope-intercept
form. Then find the slope and the y- intercept of the line with the equation:
4x + 3y = 4

5. Write an equation in slope-intercept form of the line satisfying the give condition:
The line passes through (-5,6) and is perpendicular to the line that has an x- intercept of 3 and a y- intercept of -9.

 

[Deleted member 4993]

Re: Help with Algebra problems

1. Determine whether each ordered pair is a solution of the given equation;
2x - 5y = 0 (-2,0), (-10,6), (5,0)

2. Find the x- intercept and the y- intercept of the graph of the equation:
8x - 11y = 0

3. Find the slope of each line, or state that the slope is undefined:
(-7,6) and (0,4); (-9,-3) and (1,5)

4. Solve the linear equation for y-. This will put the equation in the slope-intercept
form. Then find the slope and the y- intercept of the line with the equation:
4x + 3y = 4

5. Write an equation in slope-intercept form of the line satisfying the give condition:
The line passes through (-5,6) and is perpendicular to the line that has an x- intercept of 3 and a y- intercept of -9.

Please show us your work - what you have tried - so that we can help you properly.

 

[Loren]

1. Determine whether each ordered pair is a solution of the given equation;
2x - 5y = 0 (-2,0), (-10,6), (5,0)

I'll try the first one. You can do the other two.

(-2,0) indicates that x=-2 and y=0. So, we plug those values into the equation, and see if it tells the truth. Here goes.
2(-2) - 5(0) =?0
2(-2) = -4.
5(0)= 0.
Therefore our equation becomes -4-0=0. That does not tell the truth. Therefore, (-2,0) is not a solution.