# Elementary Algebra Practice Exam Solutions #17-19

Taught by YourMathGal
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Lesson Description:

These are solutions to a Practice Test made for my online Elementary Algebra class.

More free YouTube videos by Julie Harland are organized at http://yourmathgal.com

• Where can I find Algebra practice exam problem questions and answers?
• How do you write the equation of a line that passes through (6, -2) and has a slope of -2/3 using the point-slope form of an equation?
• What is the point-slope form of an equation and how do you use it?
• How can you check to make sure that you wrote the correct equation of a line that passes through a point and has a given slope?
• How do you solve a system of equations using substitution?
• How do you solve the system of equations 2x - 3y = -13 and y = 2x + 7 using substitution?
• If you find x using substitution in a system of equations, how do you find what y equals?
• How can you check your solution to a system of equations?
• How do you solve a system of equations using the elimination or addition method?
• How do you solve the system of equations 5x - 4y = 19 and 3x + 2y = 7 using elimination?
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This lesson goes through some example problems from a practice Algebra exam. Each step in the problems is shown clearly. The topics covered in this video are writing an equation of a line in point-slope form that passes through a point and has a given slope, and solving / checking systems of equations using substitution and elimination.