C=2πr solve for r what is the answer for this question and how do you do it
2 answers:
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Answer:
Slope = - ⅖
Y-intercept = (0, 4), where <em>b</em> = 4
Step-by-step explanation:
Given the linear equation in standard form, 2x + 5y = 20, where A = 2, B = 5, and C = 20:
Start by transforming the standard equation into its slope-intercept form, y = mx + b, where <em>m</em> = slope, and <em>b</em> = y-intercept.
Subtract 2x from both sides:
2x -2x + 5y = - 2x + 20
5y = -2x + 20
Divide both sides by 5 to isolate y:
y = - ⅖x + 4 ⇒ This is the slope-intercept form where the <u>slope</u>,<em> </em><em><u>m</u></em><u> = -⅖</u>, and the y-intercept,<em> b</em> = 4. The y-intercept is the point on the graph where it crosses the y-axis, and has coordinates of (0, <em>b</em>). The y-coordinate is the value of <em>b </em>in the slope-intercept form. Therefore, the <u>y-intercept</u> is (0, 4).