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What are the coordinates of the y-intercept in the graph of the equation y-5x=7?
MATH 1003?
A parabola.
X=-b/2a
You can either measure or estimate the coordinates visually from the graph, or solve the equation underlying the graph.
You should always use the vertex and at least two points to graph each quadratic equation. A good choice for two points are the intercepts of the quadratic equation.