Jaclyn used the slope formula to find the slope of the line in which step did jaclyn make an error?
through the points given in the table.
in step 1, she switched the x and y values in point
2
in step 2, she used the wrong formula for slope
in step 3, she simplified the slope incorrectly
jaclyn did not make an error
1. point 1: (0,4); point 2: (-3,0)
2. slope v2 -6 - 4
3. slope = 3

When graphing the two equations, the point of intersection is the solution. *by the way the top question is an example of the graph* to graph each equation, apply the slope intercept form, y = mx + b *find solution for all* equations: 1) y = 5x - 2 y = x + 6 2) y = 2x - 4 y = x +2 3) y = x + 2 y = -x +2 now for questions 4-6, check the solution too 4) y = 3x + 2 y = 3x - 4 m= m= b= b= 5) y = 2x + 1 2y = 4x + 2 m= m= b= b= 6) y = x - 3 y = -x +3 m= m= b= b= *dont have to check solution for 7-9* 7) y = 5x + 1 y = x - 3 8) y = x - 5 y = 3x + 1 9) y = 3x - 1 y = 3x - 4

International calls require the use of a country code. many country codes a 3-digit numbers. country codes do not begin with a 0 or 1. there are no restrictions on the second and third digits. how many different 3-digit country codes are possible?

3x + 4y = 5 x- 3y = -7 solve by substitution