\( y=-4 x+5 \) A. \( (-4,5) \) B. \( (-2,13) \) C. \( (0,-4) \)
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The Deep Dive
The equation \( y = -4x + 5 \) describes a linear function, meaning it creates a straight line on a graph. To check if a point lies on this line, substitute the x-value into the equation and see if you get the y-value. For instance, if you try point A, \( (-4, 5) \), substituting \( x = -4 \) gives \( y = -4(-4) + 5 = 16 + 5 = 21 \), which isn't 5, so it's not on the line. Now, let’s consider the fun part - playing with the equation! If you want to find where the line crosses the y-axis, set \( x = 0 \); you’ll find that \( y = 5 \). This means the line crosses the y-axis at \( (0, 5) \). You can also plot this on a graph to visualize its steep downward slope, a fun way to practice graphing linear equations!
