Q. How many solutions does the system have?{y=−7x+8y=−7x−8Choose 1 answer:(A) Exactly one solution(B) No solutions(C) Infinitely many solutions
Analyze Equations: Analyze the system of equations.We have the system:{y=−7x+8,y=−7x−8}:To determine the number of solutions, we need to compare the slopes and y-intercepts of the two lines.
Identify Slopes and Intercepts: Identify the slopes and y-intercepts of the lines.The slope-intercept form of a line is y=mx+b, where m is the slope and b is the y-intercept.For the first equation, y=−7x+8, the slope (m) is −7 and the y-intercept (b) is 8.For the second equation, y=−7x−8, the slope (m) is also −7 and the y-intercept (b) is m2.
Compare Slopes and Intercepts: Compare the slopes and y-intercepts.Both lines have the same slope, −7, but different y-intercepts (8 and −8).Since the slopes are the same but the y-intercepts are different, the lines are parallel and will never intersect.
Conclude Number of Solutions: Conclude the number of solutions. Parallel lines never meet, so there are no points of intersection. Therefore, the system has no solutions.